[R] Doubt regarding the autoplot function in ggfortify library

[manju moorthy]

Iam using autoplot function from the ggfortify library. I saw that autoplot
gives the 1st two principal components. I am using autoplot to generate 1st
two principal components on a clustered object.
The usage is like :

autoplot(pam(my_data[1:256], 3), label = TRUE, label.size = 4, frame =
TRUE, frame.type = 'norm')

So here autoplot generates the principal components on the clustered
object. So can we actually call this a PCA plot? Also what is the algorithm
used by autoplot for generating principal components?

Thanks in advance for the help.



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